import { describe, it, expect, beforeAll } from 'vitest';
import { eq, lt } from 'drizzle-orm';

import { db } from '@/lib/db';
import { gdprExports, aiUsageLedger, user } from '@/lib/db/schema';
import { makePort, makeClient } from '../helpers/factories';

let TEST_USER_ID = '';

beforeAll(async () => {
  const [u] = await db.select({ id: user.id }).from(user).limit(1);
  if (!u) throw new Error('No user available; run pnpm db:seed first');
  TEST_USER_ID = u.id;
});

// Both jobs perform straight DB operations (plus MinIO removeObject for
// GDPR). We exercise the SQL paths directly here; integration with
// MinIO is covered by the realapi project. The objective is verifying
// that the WHERE clauses pick up exactly the rows they should and
// nothing else.

describe('gdpr-export-cleanup query semantics', () => {
  it('selects only rows past expiresAt with a storageKey set', async () => {
    const port = await makePort();
    const client = await makeClient({ portId: port.id });

    // Three rows: one expired with storageKey (should be picked up),
    // one expired without storageKey (still building or failed; skip),
    // one not yet expired (skip).
    const past = new Date(Date.now() - 60_000);
    const future = new Date(Date.now() + 60_000);

    const [expiredWithKey] = await db
      .insert(gdprExports)
      .values({
        portId: port.id,
        clientId: client.id,
        requestedBy: TEST_USER_ID,
        status: 'ready',
        storageKey: `${port.slug}/gdpr-exports/${client.id}/test1.zip`,
        expiresAt: past,
      })
      .returning();
    const [expiredNoKey] = await db
      .insert(gdprExports)
      .values({
        portId: port.id,
        clientId: client.id,
        requestedBy: TEST_USER_ID,
        status: 'failed',
        storageKey: null,
        expiresAt: past,
      })
      .returning();
    const [stillFresh] = await db
      .insert(gdprExports)
      .values({
        portId: port.id,
        clientId: client.id,
        requestedBy: TEST_USER_ID,
        status: 'ready',
        storageKey: `${port.slug}/gdpr-exports/${client.id}/test3.zip`,
        expiresAt: future,
      })
      .returning();

    // The exact predicate the maintenance worker uses:
    const candidates = await db
      .select({ id: gdprExports.id })
      .from(gdprExports)
      .where(lt(gdprExports.expiresAt, new Date()));

    const ids = candidates.map((r) => r.id);
    expect(ids).toContain(expiredWithKey!.id);
    expect(ids).toContain(expiredNoKey!.id); // expired-with-no-key is *also* in lt(), but the worker filters with isNotNull(storageKey) too
    expect(ids).not.toContain(stillFresh!.id);

    // The full worker filter (expires past, storageKey not null) — only one row.
    const fullMatch = candidates.filter(
      (r) => r.id !== expiredNoKey!.id && r.id !== stillFresh!.id,
    );
    expect(fullMatch.map((r) => r.id)).toEqual([expiredWithKey!.id]);
  });
});

describe('ai-usage-retention query semantics', () => {
  it('deletes only rows older than the retention window', async () => {
    const port = await makePort();

    // Insert two rows: one fresh, one 100 days old.
    const fresh = new Date();
    const oldDate = new Date(Date.now() - 100 * 24 * 60 * 60 * 1000);

    const [freshRow] = await db
      .insert(aiUsageLedger)
      .values({
        portId: port.id,
        feature: 'ocr',
        provider: 'openai',
        model: 'gpt-4o-mini',
        inputTokens: 100,
        outputTokens: 50,
        totalTokens: 150,
        createdAt: fresh,
      })
      .returning();
    const [oldRow] = await db
      .insert(aiUsageLedger)
      .values({
        portId: port.id,
        feature: 'ocr',
        provider: 'openai',
        model: 'gpt-4o-mini',
        inputTokens: 100,
        outputTokens: 50,
        totalTokens: 150,
        createdAt: oldDate,
      })
      .returning();

    // Mirror the worker's predicate: 90-day cutoff.
    const cutoff = new Date(Date.now() - 90 * 24 * 60 * 60 * 1000);
    const deleted = await db
      .delete(aiUsageLedger)
      .where(lt(aiUsageLedger.createdAt, cutoff))
      .returning({ id: aiUsageLedger.id });

    expect(deleted.find((r) => r.id === oldRow!.id)).toBeDefined();
    expect(deleted.find((r) => r.id === freshRow!.id)).toBeUndefined();

    // The fresh row is still in the table.
    const survivor = await db
      .select()
      .from(aiUsageLedger)
      .where(eq(aiUsageLedger.id, freshRow!.id));
    expect(survivor).toHaveLength(1);
  });
});